v If the failing IPL was mode D from an alternate IPL media, then use the
“ALTINTF” on page 499 symbolic FRU.
Does the same SRC occur ?
Yes No
↓ Follow the service actions for the new SRC.
If the IPL is successful, then the failing item is the load-source disk
device. Slip-install Licensed Internal Code and attempt another IPL. If
the failure still occurs replace the load-source disk device unit.
3. The failing item is one of the cards or devices attached to the interface for IPL
load-source device(s).
If the system has recently had new PTFs loaded and applied, or the failure first
occurred during an alternate mode D IPL, or a previous IPL ended in an
unexpected power off, then attempt to reload service processor code.
Contact your next level of support for instructions on reloading the service
processor code.
Is this system a Model 830 with SB2 System Unit and FC 9074 ?
Yes No
↓ Go to step 7 of this procedure.
4. See “Locations — Models 830, SB2 System Unit with FC 9074 Base I/O Tower”
on page 709.
Remove the IOPs and IOAs, EXCEPT for the load-source IOP and the first
storage IOA. (Normally this would mean to remove the cards in locations C02
and C04 - but leave the cards in location C01 and C03.)
Attempt to perform the alternate IPL
5. Does the same SRC occur ?
Yes No
↓ If the system IPLs past the original error, then isolate to the failing IOP
or IOA card.
Follow the service actions for the new SRC.
6. Remove (and label) all of the storage device units EXCEPT for the alternate IPL
load-source device unit you are currently using. (This includes all of the disk
devices in D31-D40 and D46-D50.)
If the system IPLs past the original error, then isolate to the failing device unit.
If the failure still occurs, replace the following FRUs in order one at a time until
the problem is resolved. See “Chapter 4. Removal and Installation Procedures”
on page 617.
a. Load Source IOP in location C01 in the FC 9074 Base I/O Tower
b. First storage IOA (location C02, C03 or C04) in the FC 9074 Base I/O Tower
c. HSL I/O bridge Card in location C08 in the FC 9074 Base I/O Tower
d. Network interface controller (NIC) card in location M06 in the 830 System
Unit
e. Tower Card in location CB1 in the FC 9074 Base I/O Tower
7. This is a Model 840, SB3 System Unit and FC 9079 Base I/O Tower.
See “Locations — Models 840, SB3 System Unit with Processor Tower and FC
9079 Base I/O Tower” on page 719.
Symbolic FRUs
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation 545
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